38257905 has 32 divisors (see below), whose sum is σ = 74075904. Its totient is φ = 16459776.

The previous prime is 38257841. The next prime is 38257907. The reversal of 38257905 is 50975283.

38257905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38257905 - 2⁶ = 38257841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38257907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8932 + ... + 12501.

It is an arithmetic number, because the mean of its divisors is an integer number (2314872).

Almost surely, 2^38257905 is an apocalyptic number.

38257905 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38257905 is a deficient number, since it is larger than the sum of its proper divisors (35817999).

38257905 is a wasteful number, since it uses less digits than its factorization.

38257905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21465.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 38257905 is about 6185.2974867827. The cubic root of 38257905 is about 336.9564143956.

The spelling of 38257905 in words is "thirty-eight million, two hundred fifty-seven thousand, nine hundred five".